Husqvarna Lawn Mower Troubleshooting Tips for the LTH1742 and More
Page 26

TROUBLESHOOTING POINTS

PROBLEM

CAUSE

 

CORRECTION

Engine continues to run

1.

Faulty operator-safety presence control system.

1.

Check wiring, switches and connections. If not

when operator leaves

 

 

 

corrected, contact an authorized service center/

seat with attachment

 

 

 

department.

clutch engaged

 

 

 

 

 

 

 

 

 

Poor cut - uneven

1.

Worn, bent or loose blade.

1.

Replace blade. Tighten blade bolt.

 

2.

Mower deck not level.

2.

Level mower deck.

 

3.

Buildup of grass, leaves, and trash under mower.

3.

Clean underside of mower housing.

 

4.

Bent blade mandrel.

4.

Replace blade mandrel.

 

5.

Clogged mower deck vent holes from buildup of

5.

Clean around mandrels to open vent holes.

 

 

grass, leaves, and trash around mandrels.

 

 

 

 

 

 

 

Mower blades will not

1.

Obstruction in clutch mechanism.

1.

Remove obstruction.

rotate

2.

Worn/damaged mower drive belt.

2.

Replace mower drive belt.

 

3.

Frozen idler pulley.

3.

Replace idler pulley.

 

4.

Frozen blade mandrel.

4.

Replace blade mandrel.

 

 

 

 

 

Poor grass discharge

1.

Engine speed too slow.

1.

Place throttle control in “FAST” position.

 

2.

Travel speed too fast.

2.

Shift to slower speed.

 

3.

Wet grass.

3.

Allow grass to dry before mowing.

 

4.

Mower deck not level.

4.

Level mower deck.

 

5.

Low/uneven tire air pressure.

5.

Check tires for proper air pressure.

 

6.

Worn, bent or loose blade.

6.

Replace/sharpen blade. Tighten blade bolt.

 

7.

Buildup of grass, leaves and trash under mower.

7.

Clean underside of mower housing.

 

8.

Mower drive belt worn.

8.

Replace mower drive belt.

 

9.

Blades improperly installed.

9.

Reinstall blades sharp edge down.

 

10.

Improper blades used.

10.

Replace with blades listed in this manual.

 

11.

Clogged mower deck vent holes from buildup of

11.

Clean around mandrels to open vent holes.

 

 

grass, leaves, and trash around mandrels.

 

 

 

 

 

 

 

Headlight(s) not working

1.

Switch is “OFF”.

1.

Turn switch “ON”.

(if so equipped)

2.

Bulb(s) or lamp(s) burned out.

2.

Replace bulb(s) or lamp(s).

 

3.

Faulty light switch.

3.

Check/replace light switch.

 

4.

Loose or damaged wiring.

4.

Check wiring and connections.

 

5.

Blown fuse.

5.

Replace fuse.

 

 

 

 

 

Battery will not charge

1.

Bad battery cell(s).

1.

Replace battery.

 

2.

Poor cable connections.

2.

Check/clean all connections.

 

3.

Faulty regulator (if so equipped).

3.

Replace regulator.

 

4.

Faulty alternator.

4.

Replace alternator.

 

 

 

 

 

Loss of drive

1.

Freewheel control in “disengaged” position.

1.

Place freewheel control in “engaged” position.

 

2.

Motion drive belt worn, damaged, or broken.

2.

Replace motion drive belt.

 

3.

Air trapped in transmission during shipment

3.

Purge transmission.

 

 

or servicing.

 

 

 

 

 

 

 

Engine “backfires”

1.

Engine throttle control not set at “SLOW”

1.

Move throttle control to “SLOW” position and allow

when turning engine

 

position for 30 seconds before stopping engine.

 

to idle for 30 seconds before stopping engine.

“OFF”

 

 

 

 

 

 

 

 

 

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Contents LTH1742 General Operation IV. ServiceSafe Operation Practices for Ride-On Mowers II. Slope OperationSafety Rules Table of Contents Key Unassembled PartsSteering Wheel Seat Slope SheetTo Remove Tractor from CAR- TON AssemblyTools Required for Assembly Before Removing Tractor from SkidCheck Battery See Fig HOW to SET UP Your TractorInstall Seat See Fig Check Deck Levelness To Convert to Bagging or DischargingCheck Tire Pressure Check for Proper Position of ALL BeltsOperation Know Your Tractor HOW to USE Your Tractor To Operate on Hills Before Starting the EngineTo Operate Mower See Fig To Transport See FigsPurge Transmission ADD GasolineTo Start Engine See Fig Automatic Transmission Warm UPMowing Tips Mulching Mowing TipsService Dates MaintenanceLubrication Chart General RecommendationsTractor Engine Muffler CleaningClean AIR INTAKE/COOLING Areas Spark PlugsTo Level Mower Housing Service and AdjustmentsTo Install Mower See Fig To Remove Mower See FigBelt Removal Belt InstallationTo Replace Mower Blade Drive Belt See Fig To Replace Motion Drive Belt See Fig Transaxle Motion Control Lever Neutral Adjustment See FigTo Adjust Brake To Check BrakeReplacing Battery See Figs Transmission REMOVAL/REPLACEMENTTo Adjust Steering Wheel ALIGN- Ment Front Wheel TOE-IN/CAMBERInterlocks and Relays To Adjust CarburetorTo Replace Headlight Bulb To Replace FuseFuel System StorageOther Engine OILTroubleshooting Points OFF Schematic Tractor - Model NO. LTH1742 LTH1742A, Product no 57Electrical KEY Part Description Chassis and Enclosures 532 17 46-19 Chassis Stamping Drive CRD Steering Assembly Repair Parts Seat Assembly 532 14 SeatDecals Wheels & TiresEngine Repair Parts Mower Deck Repair Parts Mower Lift Repair Parts Service Notes Service Notes Warranty Statement Suggested Guide for Sighting Slopes for Safe Operation Only Ride UP and Down Hill Not Across Hill Degrees MAX532 18 44-93 11.20.02 RH

LTH1742 specifications

The Husqvarna LTH1742 is a standout in the realm of riding lawn mowers, designed to deliver both performance and comfort for homeowners managing medium to large lawns. With its robust build and user-friendly features, it ensures a seamless mowing experience that meets the demands of any yard.

One of the key features of the LTH1742 is its powerful engine. Equipped with a 17-horsepower Briggs and Stratton engine, this mower provides ample power to handle tough grass and uneven terrain. The reliable four-stroke engine ensures efficient fuel consumption while producing the necessary torque for effective cutting even in challenging conditions.

The 42-inch cutting deck is another significant characteristic of the Husqvarna LTH1742. Its size strikes a balance between maneuverability and mowing efficiency, allowing users to cover a wider area in less time. The deck features a robust steel construction for durability, and the cutting height can be easily adjusted from 1 to 4 inches using a convenient lever, catering to various grass types and user preferences.

To enhance the mowing experience, the LTH1742 incorporates hydrostatic transmission. This technology provides the operator with smooth and precise control over speed and direction, allowing for effortless navigation around obstacles and tight corners. The automatic drive system eliminates the need for gear shifting, making it accessible for users of all experience levels.

Comfort is also a focal point of the Husqvarna LTH1742. It comes equipped with an ergonomic seat that offers ample support, ensuring that users can mow for extended periods without discomfort. The easy-to-reach controls and intuitive dashboard further enhance user experience, allowing for quick adjustments without needing to divert attention from the mowing process.

Another notable feature includes the ease of maintenance. The mower is designed with a washout port that makes cleaning the cutting deck a straightforward task, prolonging the equipment's lifespan and maintaining optimal performance. Additionally, the LTH1742 offers a variety of accessories, enabling users to customize their mower for different tasks, such as mulching or bagging.

In summary, the Husqvarna LTH1742 combines power, efficiency, and user-friendly features, making it an excellent choice for homeowners looking to maintain their lawns with ease. Its powerful engine, adjustable cutting deck, hydrostatic transmission, and attention to operator comfort solidify its place as a reliable and effective lawn care solution.
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